CRP is one of the fastest markers of inflammation in the body. It climbs within hours of an infection or injury and falls quickly once it settles.
C-Reactive Protein (CRP). A protein the liver releases into the blood when there is infection, injury or inflammation anywhere in the body.
ESR and full blood count. Measured on the same draw. ESR is a slower inflammation marker and the white cell count shows how the immune system is responding, so all three are read together.
CRP is a general alarm signal. It rises within about 6-8 hours of an infection or injury, often peaks within two days and drops quickly as the cause clears. It does not show where the inflammation is, but it shows that something is going on and roughly how much. That makes it useful when you feel run down, keep getting ill, or have aches and stiffness that will not settle.
This standard CRP test is different from the hs-CRP on the Heart Health section. Standard CRP is built for the higher levels seen with infection and inflammation. hs-CRP measures much smaller amounts and is used for long-term heart risk. In this section, CRP sits with ESR and the white cell count to give a picture of what your immune system is doing right now.
CRP is usually reported in mg/L, and some labs use mg/dL (divide mg/L by 10). Many labs treat under 5 mg/L or under 10 mg/L as normal, depending on the method, so check your report's range.
Mild rises are common with viral infections, minor injuries, hard training and long-running inflammation. Higher levels are more often linked with bacterial infection or significant inflammation. A raised CRP is read with your symptoms, ESR and white cells, and a high or unexplained result should be followed up with your own doctor.
A normal CRP suggests no significant active inflammation at the time of the draw. It does not rule out every condition, so ongoing symptoms are still worth discussing.
Reference ranges differ between labs, and a single result is a snapshot. Your consultant reads every value against your history and the rest of the screen, not in isolation.
This test is part of Baseline’s full blood screen: 122 parameters across ten systems from one draw, for AED 850, with results in 48 hours. It is not sold as a single test, because the result means more next to everything else.
Ranges are the lab’s own. Your consultant goes through what they mean with you.
Your results arrive in the Baseline app, every marker against the lab’s own range, checked by your consultant before you see them. The values above are an example.
This page is general information, not a diagnosis. If you feel unwell, or your symptoms are new or getting worse, speak to a doctor.
Reading is not a diagnosis. A consultation goes through your history with you and tells you plainly whether a program fits, including when it does not. AED 350, credited in full against your first order.